Compiling error (novice problem)

I was having problems with this program or better with the int main() function. The program is supposed to ask the user for his name and password. After that the user will be able to access different infos based on his security clearing.
The comments in the code are English tho the program itself is in German (long story why its in German ^^)
I shortened the code so it will only work properly for the user "kornelia" and "eduard" (both with high security clearing)

Hi. so this is actually a continuation from another question of mine[Here](https://www.daniweb.com/programming/software-development/threads/506795/dynamically-add-values-into-datagridview-cell-from-listbox-vb2010) but i was advised to start a new thread as the original question …

I have a 2d matrix with dimension (3, n) called A, I want to calculate the normalization and cross product of two arrays (b,z) (see the code please) for each column (for the first column, then the second one and so on).
the function that I created to find the ...

Write a C program that should create a 10 element array of random integers (0 to 9). The program should total all of the numbers in the odd positions of the array and compare them with the total of the numbers in the even positions of the array and indicate ...